Giant anthem x0 or x1

Hi all I'm currently in the market to buy a full sus as an upgrade from my boardman ht pro. I can currently get last year's anthem xo for £1749 reduced from £3400 or the x1 for £1649 reduced from £2400. The main difference I can see is one runs completes sram xo and the other complete xt. My boardman currently runs x9 which I've been very happy with but I've only had it a few months. I like to trail ride with the boys thru the woods with some fast downhill twisty action and the occasional small jump. I know both are top end spec ccomponents but not sure which is better than xo seems too good to be true with the price drop?
Any advice would much appreciated from you guys as your a lot more experienced than me.
Many thanks Shane

dunno, I'm not a SRAM fan, prefer Shimano myself, especially when it comes to brakes, but if you like SRAM, then along with the XO you'll get a much better wheelset. To me XO is not quite XTR, it's sort of like between XT and XTR, so that there wouldn't fuss me, but a new wheelset will easily run you $350+.